Putting literally everyone on the dole is the opposite of conservative
What is not conservative is government micro-managing people’s personal choices to make sure they don’t get off welfare.
An income guarantee is not welfare. It simply is a floor through which you can’t fall regardless of the economy or social changes in our society. It frees people to take risks, to start that small business or invent something because a true safety net is always there.
In our current welfare system, people are paid to do nothing. UBI isn’t about extending the dole but getting the government out of people’s lives and telling them what they can and can’t do. That is more compatible with small government, greater freedom and empowering individuals and families is what conservatives are after.